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公开(公告)号：US20190181816A1
公开(公告)日：2019-06-13
申请号：US16280180
申请日：2019-02-20
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Shota ISHIHARA , Seiko ONO , Yusuke SHIMAMUNE , Fuminori MORISAWA , Shizuki NAKAJIMA , Yuri HONDA , Kazuhiro KOSHIO , Masato SATO
CPC classification number: H03F3/21 , H03F1/0261 , H03F1/22 , H03F1/34 , H03F3/191 , H03F3/245 , H03F2200/144 , H03F2200/18 , H03F2200/318 , H03F2200/408 , H03F2200/451
Abstract: A power amplifier module includes a first current source that outputs a first current corresponding to a level control voltage for controlling a signal level of an amplified signal, a second current source that outputs a second current corresponding to the level control voltage, a first transistor in which an input signal and a first bias current are supplied to a base and an emitter is grounded, a second transistor in which an emitter is connected to a collector of the first transistor, the second current is supplied to a base, and a first amplified signal obtained by amplifying the input signal is output from a collector, and a third transistor in which the first current is supplied to a collector, a bias control current or voltage is supplied to a base, and the first bias current is supplied from an emitter to the base of the first transistor.
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公开(公告)号：US20180083581A1
公开(公告)日：2018-03-22
申请号：US15710426
申请日：2017-09-20
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Shota ISHIHARA , Seiko ONO , Yusuke SHIMAMUNE , Fuminori MORISAWA , Shizuki NAKAJIMA , Yuri HONDA , Kazuhiro KOSHIO , Masato SATO
IPC: H03F3/21
CPC classification number: H03F3/21 , H03F1/0261 , H03F1/22 , H03F1/34 , H03F3/191 , H03F3/245 , H03F2200/144 , H03F2200/18 , H03F2200/318 , H03F2200/408 , H03F2200/451
Abstract: A power amplifier module includes a first current source that outputs a first current corresponding to a level control voltage for controlling a signal level of an amplified signal, a second current source that outputs a second current corresponding to the level control voltage, a first transistor in which an input signal and a first bias current are supplied to a base and an emitter is grounded, a second transistor in which an emitter is connected to a collector of the first transistor, the second current is supplied to a base, and a first amplified signal obtained by amplifying the input signal is output from a collector, and a third transistor in which the first current is supplied to a collector, a bias control current or voltage is supplied to a base, and the first bias current is supplied from an emitter to the base of the first transistor.
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公开(公告)号：US20180302045A1
公开(公告)日：2018-10-18
申请号：US16013039
申请日：2018-06-20
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Shota ISHIHARA , Seiko ONO , Yusuke SHIMAMUNE , Fuminori MORISAWA , Shizuki NAKAJIMA , Yuri HONDA , Kazuhiro KOSHIO , Masato SATO
CPC classification number: H03F3/21 , H03F1/0261 , H03F1/22 , H03F1/34 , H03F3/191 , H03F3/245 , H03F2200/144 , H03F2200/18 , H03F2200/318 , H03F2200/408 , H03F2200/451
Abstract: A power amplifier module includes a first current source that outputs a first current corresponding to a level control voltage for controlling a signal level of an amplified signal, a second current source that outputs a second current corresponding to the level control voltage, a first transistor in which an input signal and a first bias current are supplied to a base and an emitter is grounded, a second transistor in which an emitter is connected to a collector of the first transistor, the second current is supplied to a base, and a first amplified signal obtained by amplifying the input signal is output from a collector, and a third transistor in which the first current is supplied to a collector, a bias control current or voltage is supplied to a base, and the first bias current is supplied from an emitter to the base of the first transistor.
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